Ọdabara na mmanụ na griiz lubrication usoro, na mmanụ nwere ike gbanwee aka ike, na onye ọ bụla mmanụ outlet na-nyere a ego valvụ iji gbochie mmanụ si na-hapụrụ. Counterflow, nwere ike ji mee ihe na etiti oge ụdị mmanụ lubrication mgbapụta, na-aga n'ihu mmanụ lubrication mgbapụta na ntuziaka mmanu mmanu mgbapụta.
